Improvement in jig-saws



W. I. WINNE.

are SAW. I

No.178,039. mmem 30,1876.

N. PETERS, PHOTO-LJTROGkAPHER, WASHINGTON. D c.

TTNITED STATES PATENT orrrcn.

WILLIAMQI. WINNE, OF ALBANY, NEWYORK.

IMPROVEMENT IN JiG-SAWS.

Specification forming part of Letters Patent No. 178,039, dated May 30,1876 application filed April 15, 1876.

. To all whom it may concern:

Be it known that I, WILLIAM I. WINNE, of the city and county of Albany,and State of New York, have invented a new and useful Improvement onJig-Saws, of which the following is a full and exact description,reference being had to the-accompanying drawing, making a part of thisspecification, in which- Figure 1 is a side elevation, and Fig; 2 a planView, of my invention.

My invention relates to the class of jigsaws that are complete withinthemselves, and not having detached parts, such as guides, springs,860., secured to the ceiling or other parts of the 'room' wherein theyare used; and it consists of the arrangement of parts constructed andoperating in the manner herein shown and described.

As shown in the drawing, A islthe frame of the machine, having twoprojecting arms, B, provided at their outer extremities with openingsfor receiving the slides for guiding the saw. These openings should bein exact line with each other vertically, and may be made of anysuitable form, each having a slotted opening cut through atthe side ofthe arms. Preferably I make the openings of the fiat quadrangular formshown in Fig. 2. The slides O are made to move freely in the openings ofthe arms B. They are each provided with a wrist-pin, D, which projectsthrough the slotted openings in the sides of the arms. The lower end ofthe saw E is attached by means of a pin, or by any of the common andwell-known means for forming these connections, to the upper end of thelower slide.

The upper end of the saw is connected to the lower end of the upperslide by means of the tension screw F, which passes vertically throughthe slide, and is provided with a thumb-nut, G, for applying therequisite strain to the saw. The working-beams H vibrate upon the studsI, fixed to the arms B of the frame. At their outer ends they have theslotted openings h for receiving the friction rollers or sleeves J,which are placed upon the wrist-pins D for the purpose of converting thefrictional contact of these parts from a sliding to a rolling motion.

The rollers are retained in position by means of the collars K securedto the wristpins D. L is a link for connecting the rear ends of theworking-beams H together. It is pivoted to the beams by means ofwrist-pins or studs to allow for the vibratory motion of the beams. M, apitman for forming a connection between the Wrist-pin lot the link L,

and the wrist-pin n of the crank-wheel N sea cured to the shaft 0. Thisshaft hasits bearing upon the frame A, and is provided with thebalance-wheel P, and pulley Q, for receiving the belt from thedriving-pulley R,

upon which a handle, S, is fixed for impartcommonly done for amusementin domestic circles, usually consisting of ornamental boxes, brackets,850., for which purpose it may be driven by one hand of the operator,leaving the other hand free for guiding the work;

but it may readily be adapted to use for heavier work, and driven bypower where required.

It will readily be seen that the slides O,

by being guided by the openings in the arms B, cause the saw to travelconstantly in a true vertical line, the slotted openings h ofworking-beams compensating for the difference between the circular pathof the ends of the working-beams and the straight line in which theslides move. By this, while I secure all the advantage obtained by theuse of the working-beams for gaining greater space between the saw andthe link L, I avoid the objectionable feature of the raking motionimparted to the saw when such working-beams are used without slides andguides.

I claim as my inventionarranged to operate as and for the purpose Thecombination, with the workling-beams specified.

H provided with slotted openings L and link v Ljof the slides 0,provided with tvrist-pins 7 WILLIAM WINNE' D, and friction-rollers Jguided by the open- Witnesses: ings in the arms B of the frame A, saw-E,WILLIAM H. LOW, and tension-screw B, when constructed and A. H. LOW.

